The SG-231 HF-VHF Smartunerô provides complete frequency agility with no operator intervention and is continuous coverage from 1 to 60 MHz with nearly any antenna. The compact, weatherproof design fits even the most restrictive installations. It handles from 3 to 100 watts and requires only 12 VDC and RF connections. 9.5 x 11.5 x 1.7 inches.

The optional SmartLock-Pro provides two external controls for the SG-231 (see below).